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Hello,

I simulated a cylinder with radius R with 2 different regions. The first one is the central of the cylinder (radius S), whereas the second one is at the inner wall (thickness = R - S). In the former one I use the Navier-Stokes equation and the convection-diffusion equation, in the latter I use only the diffusion-reaction equation (velocity = 0).

I exported the m-file in Matlab and it works. Now I would like to do following for loop in Matlab:

1. Solve the geometry for the first time step;
2. Changing the radius S (R = const);
3. Solve the update geometry using the solution of the previous simulation as initial condition;

The problem is that I cannot do the last step, I get this message "Messages: Wrong number of dofs in property init". I guess it happened because modifying the geometry changes also the number of mesh and there is no agreement between the first and the second geometry.
I think it is possible to interpolate the solution of the first step to fit with new geometry, but I do not know how to do it.

Any help would be greatly appreciated.

Thanks in advance,
Enrico